Build
Connect & operate
Design & teams
Start hereScope a build in one callBring a spec, a wireframe, or a paragraph. You leave with an architecture, a timeline, and a number.Book a scoping call
AI software
LLM & data systems
Vibe coding
Ready to ship?Put AI where the work isAgents, RAG, and private LLMs wired into the systems your team already uses — not a chatbot bolted to a homepage.Discuss an AI project
Domain firstWe learn your workflow before we model itRegulated, operational, or high-volume — the constraints belong in the schema, not in a training doc.Talk about your domain
Plan smarterEstimate before you commitCost ranges, scope templates, and the questions we ask in discovery — free, no form.Open the cost calculator
Real conversationsTalk with a technical leadNo SDR, no discovery gauntlet. The person on the call is the one who scopes the build.Book a call
22 disciplines · one accountable team

Software development
services, end to end.

Discovery, design, build, QA, cloud and support — staffed in house, so nothing falls into the gap between vendors. Engage us for a fixed-scope build, a standing pod, or a couple of senior engineers inside your own team.

Senior US engineersFixed scope and priceYou own the code

12+

Years building software

Founded 2013

390+

Projects shipped

Web, mobile, SaaS, AI

22

Disciplines in house

No subcontracted seams

100%

Code ownership to you

From the first commit

What you are buying

What software development services actually cover

The phrase covers four distinct kinds of work that get sold as one thing. Knowing which you need changes who you should hire and what you should pay.

Product development

Building software that does not exist yet — a first release, a new module, a replacement for a system that has outgrown itself. This is the bulk of what most companies mean by custom software development services, and it is the work where scope discipline matters most, because everything is negotiable until it is built.

Integration and platform work

Making systems you already own agree with each other: APIs, webhook infrastructure, data pipelines, identity. Rarely glamorous, frequently the highest-return engineering a company can buy, and almost always underestimated because the difficulty lives in other people's data rather than in your own code.

Modernization

Moving off a stack that still works but is becoming expensive to staff, secure or extend. Done well it is incremental — route by route, table by table, with the old system serving customers throughout. Done as a rewrite it is the single most common way a software budget disappears.

Capacity

Engineers added to a team you already have, for a launch, a migration, or a skill you need for six months and not forever. The deliverable is throughput rather than a product, and it is priced and managed differently from everything above.

The catalogue

Every discipline a production system needs

Most projects need several of these at once. Buying them from one team is not a convenience argument — it is what stops a design being approved that engineering cannot build, or a test suite arriving after the architecture is already fixed.

Build

Net-new software, from a first release to a platform that carries the business.

Custom Software Development

Line-of-business systems modeled on the way your company actually runs, including the exceptions people currently handle by hand.

Web Application Development

React, Next.js, Rails and Django applications, server-rendered where it matters for speed and search visibility.

Mobile App Development

Native iOS and Android, or a single React Native codebase when the roadmap does not justify maintaining two.

SaaS Product Development

Multi-tenant architecture, billing, roles and usage metering built in from the first sprint rather than retrofitted later.

MVP Development

A narrow, genuinely usable first release in six to ten weeks — enough product to put in front of real users.

Enterprise Software

SSO, granular permissions, audit trails and the documentation a procurement and security review will ask for.

Connect and operate

The work that decides whether software survives contact with production.

API Development & Integration

REST and GraphQL APIs, webhook infrastructure, and the integration work that makes two systems agree on one version of the truth.

Cloud & DevOps Engineering

AWS, GCP and Azure environments defined in Terraform, with CI/CD, staged rollouts and alerting that reaches a human.

QA & Software Testing

Automated unit, integration and end-to-end suites plus load and regression testing, so a release stops being a gamble.

Legacy Modernization

Incremental migrations off aging stacks, route by route and table by table, while the old system keeps serving customers.

Cybersecurity Engineering

Hardening, dependency and access audits, and remediation work scoped against real findings rather than a checklist.

Data Engineering

Pipelines, warehouses and reporting layers that make the numbers in two systems stop disagreeing.

Design and teams

Deciding what to build, and staffing the people who build it.

UI/UX Design

Interfaces drawn against the real data model, so what gets approved in design is something engineering can actually build.

Prototyping & Discovery

A clickable prototype and a written scope before the budget is committed, so the expensive decisions are made cheaply.

Technology Architecture

The decisions that are expensive to reverse — data model, service boundaries, tenancy, hosting — made once and documented.

Staff Augmentation

Senior engineers embedded in your team, your sprints and your repository, with a defined ramp-off rather than an open invoice.

Dedicated Dev Teams

A standing pod — engineers, a lead, QA and design as needed — working your backlog under one contract.

Project Management

Delivery you can audit: written acceptance criteria, two-week increments, and a working build at the end of each.

White-Label Development

Engineering delivered under an agency's brand, invisible to their client — a large share of what we do and, until now, almost impossible to find from here.

AI engineering

AI wired into the systems you already run, with a way to prove it works.

AI Application Development

Full-stack AI products, evaluated against a fixed test set rather than shipped on a convincing demo.

AI Agent Development

Multi-step agents with tool access, guardrails and an audit trail of what they did and why.

Private LLM Deployment

Self-hosted Llama, Mistral and Qwen for data that cannot leave your perimeter.

RAG & Document Intelligence

Cited answers over your own documents, with extraction pipelines for the formats nobody wants to parse by hand.

Engagement models

Three ways to buy the same team

The right structure depends on whether your scope is fixed, your roadmap is continuous, or your own team just needs depth for a stretch. All three are month-to-month with no exit penalty, and we will tell you when the cheapest of them is the right answer.

Fixed-scope build

Fixed price, fixed date

Defined product, defined budget

You know what needs building. We scope it in discovery, quote a fixed price against that scope, and deliver on a published timeline. Change requests are priced individually rather than absorbed silently.

  • Written acceptance criteria
  • Discovery credited to the build
  • Two-week increments
  • Code and infrastructure yours at launch
Get a fixed quote

Embedded engineers

A defined stretch

In-house team that needs depth

Senior specialists dropped into your existing team for a migration, a launch crunch, or a skill the team does not have and does not need permanently.

  • Individually interviewed
  • Ramps in under two weeks
  • Your process, not ours
  • Defined ramp-off
Request rates

What it costs

Software development pricing, without the discovery call

Real ranges for the engagements we actually run. Every firm's numbers differ; what should not differ is being told them before you have spent an hour on a call.

EngagementTypical rangeTimelineWhat it buys
Prototype or discoveryScoped per engagement2 – 4 weeksClickable prototype, architecture diagram, risk list and a costed scope. Yours to take elsewhere.
MVPScoped per engagement6 – 10 weeksA narrow first release real users can use — one workflow done properly rather than five done partially.
Full product buildScoped per engagement3 – 9 monthsMulti-role application with integrations, admin tooling, test coverage and production infrastructure.
Dedicated podScoped per engagementMonthlyA standing team on your backlog. Cancel at the end of any month, no exit penalty.
Embedded engineersScoped per engagementDefined stretchSenior specialists inside your team and your process, with a planned ramp-off.

Ranges assume US-based senior engineers and include QA, DevOps and project management rather than quoting them separately. A quote below these bands usually means one of those three was left out of the scope.

Choosing a partner

How to evaluate a software development services company

Six questions that separate firms quickly. We have written the answer we would give to each, so you can hold us to the same standard as everyone else you are talking to.

Who actually writes the code?

Ask whether the engineers in the pitch are the engineers on the project, and whether any work is subcontracted. Ours are in house across all 22 disciplines, which is the reason we can say no seams and mean it.

What happens to the code if we stop?

Source, infrastructure-as-code, CI configuration and documentation should transfer on request at any point, not at some milestone. If a framework or hosting arrangement makes leaving expensive, that is a commercial decision dressed as a technical one.

How is AI-written code reviewed?

Most firms now ship AI-assisted code, including us — the speed is real. The question is what gates it. Every pull request here has a human reviewer with authority to reject, and automated checks gate the merge without replacing that judgment.

What does a bad week look like?

A vendor who cannot describe one has not had enough projects. Ask how a missed estimate gets communicated, and how quickly. Two-week increments with a working build exist precisely so a slip is visible in fourteen days rather than at the end.

Is discovery credited against the build?

It should be, and it should produce a document you keep regardless. Discovery sold as a non-refundable gate on a larger contract is a sales mechanism.

Who owns the relationship day to day?

Routing every technical question through an account manager adds a day to each answer. Engagements here give you direct access to the engineering lead on your project.

The full checklist — ownership, testing, security, AI use, and how to leave — is in our guide on choosing a software development company.

How an engagement runs

Twelve weeks you can audit

Software projects fail quietly, in the gap between a status report and reality. Every two weeks there is a working build on a URL you can click, which is what keeps that gap from opening.

WK 1–2DiscoveryScope, risks,architectureWK 2–4DesignFlows, UI,data modelWK 3–10BuildTwo-week incrementsWK 9–11HardenQA, load,securityWK 12LaunchCutover andrunbookONGOINGOperateSLA, iteration

Engineering standards

What every service has in common

Whichever discipline you buy, the path to production is the same. AI writes a great deal of the code we ship — that is a speed advantage we use deliberately, and it is exactly why nothing merges on confidence alone.

Lint + typesUnit testsIntegrationE2ESecurity scanPreview envHuman reviewDeploy

Typed end to end

Typed contracts at every service boundary. A schema change that breaks a caller fails in CI, not in support.

Reviewed by a person

Every pull request has a human reviewer who can reject it. Automated checks gate the merge; they do not replace judgment.

Observable on day one

Structured logs, traces and alerts ship with the first release, so the first production incident is diagnosable.

Handed over, not held

Repository, infrastructure and documentation transfer to you at launch. Nothing is locked behind a proprietary framework.

Questions

Buying software development services

What prospective clients ask before a first call.

Full-cycle: discovery and product strategy, UI and UX design, web and mobile application development, SaaS and enterprise platforms, API and integration work, cloud and DevOps engineering, QA and testing, security, data engineering, and AI development.

The reason to buy them together is that the seams between disciplines are where outsourced projects usually fail. A design approved without reference to the data model, or a build handed to a separate QA vendor, creates a gap that somebody has to pay to close later.

Not sure which service you need?

That is what discovery is for. Thirty minutes with an engineer who has built this before, and you leave with a technical direction — whether you hire DEV.co or not.